progress.php

<?php

$content = @file_get_contents('/tmp/ffmpeg_log');

if($content){
//get duration of source
preg_match("/Duration: (.*?), start:/", $content, $matches);

$rawDuration = $matches[1];

//rawDuration is in 00:00:00.00 format. This converts it to seconds.
$ar = array_reverse(explode(":", $rawDuration));
$duration = floatval($ar[0]);
if (!empty($ar[1])) $duration += intval($ar[1]) * 60;
if (!empty($ar[2])) $duration += intval($ar[2]) * 60 * 60;

//get the time in the file that is already encoded
preg_match_all("/time=(.*?) bitrate/", $content, $matches);

$rawTime = array_pop($matches);

//this is needed if there is more than one match
if (is_array($rawTime)){$rawTime = array_pop($rawTime);}

//rawTime is in 00:00:00.00 format. This converts it to seconds.
$ar = array_reverse(explode(":", $rawTime));
$time = floatval($ar[0]);
if (!empty($ar[1])) $time += intval($ar[1]) * 60;
if (!empty($ar[2])) $time += intval($ar[2]) * 60 * 60;

//calculate the progress
$progress = round(($time/$duration) * 100);

echo "Duration: " . $duration . "<br>";
echo "Current Time: " . $time . "<br>";
echo "Progress: " . $progress . "%";

}